Peoria (IL)
September
Weather in Peoria, Illinois for September 2027
Your guide to Peoria weather in September - trends and predictions
In general, the average temperature in Peoria at the beginning of September is 28.2 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 24.2 °C by the end of September.
Peoria experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 170.1 mm.
Is September a good time to visit Peoria? check out the best time to travel to Peoria page.
✨ Is September a good time to visit Peoria? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
23
Dry days
7
Rainy days
0
Snow days
27°/15°
Temperatures
17 km/h
Avg max wind
67 %
Avg humidity
Peoria Weather September
Move between months or click on a day
Temperatures trend during September in Peoria
See the weather trend as well as the moving average line
September weather in Peoria day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 31° /16° | 0 mm | 7 | |
| Sept. 2 | Sunny | 29° /15° | 0 mm | 7 | |
| Sept. 3 |  Heavy rain | 30° /16° | 33.2 mm | 7 | |
| Sept. 4 | Sunny | 30° /15° | 0 mm | 7 | |
| Sept. 5 |  Mist | 29° /18° | 0 mm | 7 | |
| Sept. 6 |  Partly cloudy | 24° /13° | 0 mm | 6 | |
| Sept. 7 | Sunny | 24° /9° | 0 mm | 6 | |
| Sept. 8 | Sunny | 27° /9° | 0 mm | 6 | |
| Sept. 9 |  Moderate rain | 26° /13° | 18.3 mm | 5 | |
| Sept. 10 | Heavy rain | 28° /15° | 31.6 mm | 5 | |
| Sept. 11 | Sunny | 30° /15° | 0.1 mm | 7 | |
| Sept. 12 | Sunny | 31° /16° | 0.1 mm | 7 | |
| Sept. 13 |  Overcast | 28° /17° | 0.4 mm | 6 | |
| Sept. 14 |  Patchy rain possible | 30° /16° | 0 mm | 7 | |
| Sept. 15 | Patchy rain possible | 32° /19° | 1 mm | 5 | |
| Sept. 16 |  Light rain | 31° /19° | 4.7 mm | 6 | |
| Sept. 17 | Light rain | 30° /16° | 5.7 mm | 6 | |
| Sept. 18 | Light rain | 28° /15° | 6.1 mm | 6 | |
| Sept. 19 | Patchy rain possible | 28° /17° | 1.8 mm | 5 | |
| Sept. 20 |  Heavy rain at times | 26° /17° | 12 mm | 4 | |
| Sept. 21 | Overcast | 23° /16° | 0.1 mm | 4 | |
| Sept. 22 | Moderate rain | 21° /14° | 14.3 mm | 5 | |
| Sept. 23 | Patchy rain possible | 24° /14° | 1.6 mm | 4 | |
| Sept. 24 | Heavy rain | 21° /14° | 29.5 mm | 5 | |
| Sept. 25 | Sunny | 22° /13° | 0.2 mm | 4 | |
| Sept. 26 |  Cloudy | 24° /11° | 0 mm | 4 | |
| Sept. 27 | Overcast | 25° /13° | 0 mm | 5 | |
| Sept. 28 | Overcast | 25° /14° | 0 mm | 5.7 | |
| Sept. 29 | Cloudy | 28° /14° | 0 mm | 5 | |
| Sept. 30 | Light rain | 25° /16° | 9.4 mm | 5 | |
| Next | |||||
Important Notice
Our weather forecast for Peoria in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Peoria forecast closer to your planned date for the most up-to-date weather information.
Change Month
Peoria in September - FAQ
What are the expected maximum and minimum temperatures in Peoria during September?
During September, expect a variety of temperatures with highs around 27° and lows near 15°, suitable for diverse activities and preferences.
How much rainfall should be expected in Peoria during September?
Significant rainfall exceeding 170.1 mm is expected in Peoria during September, occurring over more than 7 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Peoria during September?
The average wind speed in Peoria during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Peoria
Explore the daily rainfall trends and prepare for Peorias September weather 💧
Typically, Peoria has 7 rainy days in September with a total of 170.1 mm of rainfall.
UV exposure in Peoria during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Quick links
More Peoria weather pages
You are here
Where is Peoria?Get accurate weather forecasts for Peoria, located at latitude 40.694 and longitude -89.589. Stay updated with localized weather information tailored for Peoria.
Found a mistake?
We appreciate your attention to details. Tell us here.